Michigan extends contract of defensive coordinator Greg Mattison

ANN ARBOR, Mich. (AP) -- Michigan defensive coordinator Greg Mattison has agreed to a three-year contract extension that will keep him with the Wolverines through the 2016 season.

Mattison is entering the final season of his original three-year contract, and the extension was announced Friday by athletic director Dave Brandon. In a statement, Mattison said he hopes to continue to coach at Michigan for the next four years and "long after."

Mattison's defenses have ranked among the top 20 nationally in each of the last two seasons in scoring defense, passing defense and total defense. In 2012, Mattison's defense allowed 19.8 points per game, fourth in the Big Ten and 20th nationally.